Has anyone tried using the s::can spectrometer with the DT80? I believe the s::can has MODBUS but can only function as a MODBUS slave and DT80 has MODBUS but it too functions as a MODBUS slave. So can I conclude that DT80 and s:: cannot talk?

Good morning khamara,

Yes I have connected the S::can and been able to read it quite successfully. While the DT80 is a MODBUS slave device you can use functionality of the serial sensor port to simulate a master.

Connect to the S::Can with MODBUS Poll. MODBUS poll is software used to test Modbus devices and has some very useful functions. When you have established communications capture the string it is sending to the S::Can.

Then convert the string from HEX to Decimal and code it in the dataTaker serial parsing string. The data coming back from the S::Can is a big endian 32 bit floating point number. I'll post some code in the code section of the FAQ.

If you email me with your details I'll send you the test code.

Cheers,
Roger